Sebastianism: Crossover messianism that predated Sabbatianism (Kotzk Blog 503)This Episode ꟷ based extensively on the research by Professor Matt Goldish[1] ꟷ examines the unusual notion of messianic crossover between Jews, Christians and Muslims that developed around the sixteenth century. What is even more unusual, from a Jewish perspective, is that the rabbis who participated in such enterprises were always Kabbalists and often respected Halachists as well.